CN204315663U - A kind of aluminium-sulfur battery Graphene coating negative pole - Google Patents
A kind of aluminium-sulfur battery Graphene coating negative pole Download PDFInfo
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- CN204315663U CN204315663U CN201420671637.9U CN201420671637U CN204315663U CN 204315663 U CN204315663 U CN 204315663U CN 201420671637 U CN201420671637 U CN 201420671637U CN 204315663 U CN204315663 U CN 204315663U
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- aluminium
- negative pole
- sulfur battery
- graphene coating
- coating negative
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses a kind of aluminium-sulfur battery Graphene coating negative pole, comprising: 1. collector; 2. the electro-deposition aluminium lamination of described collector both sides is deposited on; 3. the graphene layer on described electro-deposition aluminium lamination is coated in.This negative pole have structure simple, be easy to make, the advantage such as Al electrochemical deposition-dissolution efficiency is high, aluminium utilance is high, good cycle.
Description
Technical field
The utility model belongs to battery and new forms of energy product scope, is specifically related to a kind of aluminium-sulfur battery Graphene coating negative pole.
Background technology
Compared with conventional electrode materials, the advantages such as element aluminum and sulphur all have that theoretical energy density is large, aboundresources, cheap, environmentally friendly, use safety.Metallic aluminium theoretical energy density, up to 2980mAh/g, is only second to lithium metal (3682mAh/g), and volume and capacity ratio is 8050mAh/cm
3, be about lithium (2040Ah/cm
3) 4 times, and chemical activity is relatively stable, is desirable negative material; Elementary sulfur also has larger theoretical energy density (1670mAh/g), is the maximum positive electrode of known energy density.Therefore, aluminium-sulfur battery be all from every side a kind of cheap, energy density is high, the ideal battery of use safety.
Metallic aluminium is a kind of very active metal, and the passivating film (oxide-film) that surface is formed is comparatively fine and close, have impact on electrochemical deposition-dissolution efficiency, make the utilance of aluminium low, seriously constrain the performance of battery capacity in charge discharge process.Although by means such as alloyings, make that aluminium surface passivated membrane is suppressed, electrical property is greatly improved, sacrifice operating potential and the multiplying power discharging property of aluminium electrode.Therefore, related researcher is attempting preparing a kind of surface always and does not exist or the aluminium electrode of less passivating film thin layer.
Summary of the invention
(1) goal of the invention
For overcoming above-mentioned prior art problem, present solution provides a kind of aluminium-sulfur battery Graphene coating negative pole.The electric deposition aluminum that the aluminium that this negative pole uses deposits for adopting electrochemical method, surface is without passivating film, and active high, in charge discharge process, electrochemical deposition-dissolution efficiency is high, can give play to battery capacity to a greater extent.The Graphene that this negative pole coating uses is a kind of carbon element class material of accurate Colloidal particles, the superhigh specific surface area had, there is strong suction-operated, the intermediate products such as adsorbable, to isolate positive pole generation in charge and discharge process Small molecular sulfide, prevent negative pole passivation, improve cycle performance of battery and useful life.
(2) technical scheme
The utility model provides a kind of aluminium-sulfur battery Graphene coating negative pole, comprising:
(1) collector;
(2) the electro-deposition aluminium lamination of described collector both sides is deposited on;
(3) graphene layer on described electro-deposition aluminium lamination is coated in.
In negative pole described in scheme, described collector comprises any one in carbon fiber, graphite, vitrescence carbon, titanium, nickel, stainless steel, iron, copper, aluminium, zinc, lead, manganese, cadmium, gold, silver, platinum, tantalum, tungsten, silicon, conductive plastics, conductive rubber.
Aluminium-sulfur battery described in scheme is with in Graphene coating negative pole, and the thickness of described electro-deposition aluminium lamination is 10 microns ~ 500 microns; Described graphene layer thickness is 0.1 micron ~ 30 microns.
Aluminium-sulfur battery described in scheme is with in Graphene coating negative pole, and described graphene layer comprises Graphene and binding agent.
Aluminium-sulfur battery described in scheme is with in Graphene coating negative pole, described binding agent comprises for polyvinyl alcohol, polytetrafluoroethylene, sodium carboxymethylcellulose, Kynoar, polystyrenebutadienes copolymer, Viton and polyurethane, PVP, polyethyl acrylate, polyvinyl chloride, polyacrylonitrile, polycaprolactam, polybutadiene, polyisoprene, polyacrylic acid, or their derivative, any one in copolymer.
A kind of preparation method of aluminium-sulfur battery Graphene coating negative pole:
Step 1, prepares electric deposition aluminum
Containing in aluminium electrolyte (aluminium can deposit), take collector as negative electrode, constant current or permanent potential electrolysis prepare electric deposition aluminum.After having deposited, under inert gas shielding, dry cathode material, the obtained collector-electric deposition aluminum material of cooling.
Step 2, prepares Graphene coating negative pole
Graphene, binding agent are mixed and make Graphene slurry, is applied to collector-electric deposition aluminum material surface, dries under inert gas shielding, the obtained Graphene coating negative pole of cooling.
(3) beneficial effect
The aluminium-sulfur battery Graphene coating negative pole that the utility model provides, has the following advantages:
(1) in the aluminium-sulfur battery Graphene coating negative pole that the utility model provides, electric deposition aluminum surface used is without passivating film, and active high, in charge discharge process, electrochemical deposition-dissolution efficiency is high, the utilance of aluminium is high, can give play to battery capacity to a greater extent.
(2) in the aluminium-sulfur battery Graphene coating negative pole that the utility model provides, Graphene used is a kind of carbon element class material of accurate Colloidal particles, the superhigh specific surface area had, there is strong suction-operated, the intermediate products such as adsorbable, to isolate positive pole generation in charge and discharge process Small molecular sulfide, prevent negative pole passivation, improve cycle performance and the useful life of battery.
(3) the aluminium-sulfur battery Graphene coating negative pole that provides of the utility model, structure is simple, is easy to preparation.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of aluminium-sulfur battery Graphene coating negative pole described in the utility model.
Wherein 1 is collector, and 2 is electro-deposition aluminium lamination, and 3 is graphene layer.
Embodiment
Be described further below with reference to the technique effect of embodiment to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.The following examples describe several execution mode of the present utility model, and they are only illustrative, and nonrestrictive.
As shown in Figure 1, a kind of aluminium-sulfur battery Graphene coating negative pole described in this embodiment, comprises collector 1, electro-deposition aluminium lamination 2 and graphene layer 3.Wherein, electro-deposition aluminium lamination 2 is deposited on collector 1 both sides by electrochemical method, and graphene layer 3 is coated on electro-deposition aluminium lamination 2.
Embodiment 1
Prepare electric deposition aluminum " aluminium chloride-lithium aluminium hydride-oxolane-benzene " electrolyte:
In " aluminium chloride-lithium aluminium hydride-oxolane-benzene " electrolyte, the mol ratio of aluminium chloride and lithium aluminium hydride is 3:1, and concentration of aluminum chloride is about 0.9mol/L, and the volume fraction of benzene is about 40%.
1. lithium aluminium hydride-tetrahydrofuran solution is prepared
Under inert gas shielding, 0.03mol lithium aluminium hydride be dissolved in 45ml oxolane, stir 12 hours, obtained lithium aluminium hydride-tetrahydrofuran solution, solution is milky white color cloud liquid.
2. aluminium chloride-oxolane-benzole soln is prepared
Under inert gas shielding, 0.09mol anhydrous Aluminum chloride is joined in 40ml benzene, under stirring state, be slowly added dropwise to 15ml oxolane; along with adding of oxolane, insoluble aluminium chloride dissolves gradually, stirs 6 hours; obtained aluminium chloride-oxolane-benzole soln, solution is shallow dark brown.
3. aluminium chloride-lithium aluminium hydride-oxolane-benzene electrolyte is prepared
Under inert gas shielding, above-mentioned lithium aluminium hydride-tetrahydrofuran solution is slowly added drop-wise in aluminium chloride-oxolane-benzole soln, stirs 12 hours, be i.e. obtained aluminium chloride-lithium aluminium hydride-oxolane-benzene electrolyte.
Embodiment 2
(1) electric deposition aluminum is prepared
In above-mentioned " aluminium chloride-lithium aluminium hydride-oxolane-benzene " electrolyte, with the thick stainless steel of 0.5mm for negative electrode, copper wire is anode, and current density is 5mA/cm2, constant-current electrolysis, and controlling electric deposition aluminum layer thickness is 50 microns.After electro-deposition completes, under inert gas shielding, dry cathode material, obtained stainless steel-electric deposition aluminum material.
(2) Graphene coating negative pole is prepared
By Graphene, binding agent PVDF in proportion (mass ratio 7:1) mix and make Graphene slurry; be applied to above-mentioned stainless steel-electric deposition aluminum material surface; controlling Graphene coating layer thickness is 10 microns, the lower 120 DEG C of oven dry of nitrogen protection, the obtained Graphene coating negative pole (the stainless steel-based end) of cooling.
Embodiment 3
In step (1), controlling electric deposition aluminum layer thickness is 250 microns, and other are with embodiment 2, obtained Graphene coating negative pole.
Embodiment 4
In step (2), controlling Graphene coating layer thickness is 20 microns, and other are with embodiment 2, obtained Graphene coating negative pole.
Comparative example
Graphene coating negative pole is replaced with high-purity aluminium flake.
With mesoporous carbon-sulphur composite material (sulfur nutrient 60%) for positive electrode, add conductive agent acetylene black, binding agent PVDF(ratio is 7:2:1), making active material slurry is applied on the thick nickel foam substrate of 0.6mm, oven dry roll to 0.33 millimeter be cut into 40mm wide × the long pole piece of 15mm, the glass fibre thick with 0.16mm be non-knit barrier film and embodiment 2,3,4, the negative pole (be cut into 40mm wide × 15mm is long) that makes of comparative example is wound into electric stamen and loads nickel plating box hat, reinject aluminium chloride-triethylamine hydrochloride ionic liquid, and AA type secondary aluminium cell is made in sealing.
Carry out charge and discharge cycles test to made battery, charge to 2.2V with 1C, 0.5C discharges, and discharge cut-off voltage is 1.2 V, and test result is as follows:
Although be described in detail the utility model with reference to embodiment, but those skilled in the art is to be understood that, when the design of the present utility model do not departed from described in appended claims and equivalent thereof and scope, various amendment and replacement can be made to it.
Claims (5)
1. an aluminium-sulfur battery Graphene coating negative pole, comprising:
(1) collector;
(2) the electro-deposition aluminium lamination of described collector both sides is deposited on;
(3) graphene layer on described electro-deposition aluminium lamination is coated in.
2. aluminium-sulfur battery Graphene coating negative pole as claimed in claim 1, it is characterized in that, described collector comprises any one in carbon fiber, graphite, vitrescence carbon, titanium, nickel, stainless steel, iron, copper, aluminium, zinc, lead, manganese, cadmium, gold, silver, platinum, tantalum, tungsten, silicon, conductive plastics, conductive rubber.
3. aluminium-sulfur battery Graphene coating negative pole as claimed in claim 1, it is characterized in that, the thickness of described electro-deposition aluminium lamination is 10 microns ~ 500 microns; Described graphene layer thickness is 0.1 micron ~ 30 microns.
4. aluminium-sulfur battery Graphene coating negative pole as claimed in claim 1, it is characterized in that, described graphene layer comprises Graphene and binding agent.
5. aluminium-sulfur battery Graphene coating negative pole as claimed in claim 4, it is characterized in that, described binding agent comprises polyvinyl alcohol, polytetrafluoroethylene, sodium carboxymethylcellulose, Kynoar, polystyrenebutadienes copolymer, Viton and polyurethane, PVP, polyethyl acrylate, polyvinyl chloride, polyacrylonitrile, polycaprolactam, polybutadiene, polyisoprene, polyacrylic acid, or their derivative, any one in copolymer.
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| CN201420671637.9U CN204315663U (en) | 2014-11-12 | 2014-11-12 | A kind of aluminium-sulfur battery Graphene coating negative pole |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106784849A (en) * | 2017-02-06 | 2017-05-31 | 安徽鹰龙工业设计有限公司 | A kind of negative electrode battery binding material and preparation method thereof |
| CN106816604A (en) * | 2017-02-06 | 2017-06-09 | 深圳市斯诺实业发展股份有限公司 | A kind of negative electrode battery binding material and preparation method thereof |
| CN107221715A (en) * | 2017-06-15 | 2017-09-29 | 湖北保灵华量子碳素科技有限公司 | A kind of preparation method for the high-performance completely-sealed lead-acid accumulator for eliminating vulcanization |
| EP3309876A3 (en) * | 2016-10-17 | 2018-06-06 | Johnson & Johnson Vision Care, Inc. | Biomedical device batteries with electro-deposited cathodes |
| CN108365171A (en) * | 2017-01-26 | 2018-08-03 | 本田技研工业株式会社 | Lithium ion secondary battery cathode and its manufacturing method and lithium rechargeable battery |
-
2014
- 2014-11-12 CN CN201420671637.9U patent/CN204315663U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3309876A3 (en) * | 2016-10-17 | 2018-06-06 | Johnson & Johnson Vision Care, Inc. | Biomedical device batteries with electro-deposited cathodes |
| RU2682482C1 (en) * | 2016-10-17 | 2019-03-19 | Джонсон Энд Джонсон Вижн Кэа, Инк. | Batteries of biomedical device with electrodeposited cathodes |
| CN108365171A (en) * | 2017-01-26 | 2018-08-03 | 本田技研工业株式会社 | Lithium ion secondary battery cathode and its manufacturing method and lithium rechargeable battery |
| CN106784849A (en) * | 2017-02-06 | 2017-05-31 | 安徽鹰龙工业设计有限公司 | A kind of negative electrode battery binding material and preparation method thereof |
| CN106816604A (en) * | 2017-02-06 | 2017-06-09 | 深圳市斯诺实业发展股份有限公司 | A kind of negative electrode battery binding material and preparation method thereof |
| CN107221715A (en) * | 2017-06-15 | 2017-09-29 | 湖北保灵华量子碳素科技有限公司 | A kind of preparation method for the high-performance completely-sealed lead-acid accumulator for eliminating vulcanization |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20191112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |